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Researchers from the University of Pennsylvania and Duke University designed and built 2D arrays of closely packed microlasers that demonstrated the stability of a single microlaser, and that collectively achieved power density that were orders of magnitude higher. While single-mode lasers eliminate variations caused by noise in their beams and improve their coherence, they are dimmer and less powerful than lasers containing multiple simultaneous modes.
The work, which was funded by the U.S. Army, combines higher laser power with beam stability and coherence. Robots and autonomous vehicles that use lidar to perform optical sensing and ranging and manufacturing materials processing techniques that use lasers are among the applications…READ MORE